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GRB 99.99% Availability Coverage 0.01% Exceedence of 22 dB interference level based on “Initial Bound Equation” determined by the conducted measurements and the ITU-R 0.01% rain rate for given areas in the GOES antenna footprint. GOES West GOES East Interference level could be exceeded in the DARK BLUE area Some locations near the equator may experience a reduced, but positive, margin under expected worst case conditions Interference Level 12

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As a contingency capability, and to give users additional time to transition from GVAR to GRB, eGVAR will provide GOES-R Imagery to Users capable of receiving today ’ s GVAR data stream – Will be broadcast through a GOES I/P Series Satellite – The signal will have the GVAR characteristics: Same transmit frequency ( MHz) and power levels Same GVAR data rate (2.11 Mbps) and format Five Similar Imager channel wavelengths (Based on ABI channels 0.64, 4.9, 6.19, 11.2, 13.3 µ m ) Imagery will be mapped to GOES NOP temporal and spatial resolution No Sounder data One full-earth disk every 30-minutes – No Mesoscale data – No “Rapid Scan;” No “Super Rapid Scan” Emulated GVAR (eGVAR) 14

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– Not an option for long-term use – Will only be operational based on assessments of end user readiness near the time for GOES-R operations: Presumes a spare satellite is available Users must not be lax in preparing for actual GOES-R (i.e., GRB) readiness Emulated GVAR (eGVAR) (Continued) 15

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Name change to High Rate Information Transmission (HRIT) required by CGMS categorization of services Virtual Channel Data Units used to separate HRIT and EMWIN data – CCSCS Virtual channels as used in LRIT today Prototype “ Software Defined Radio ” developed and demonstrated: – One hardware/software configuration can receive all current and future EMWIN, LRIT and HIRT/EMWIN signals with NO hardware changes or upgrades (GOES I-S compatible). No user transition necessary. – Technology demonstration to proves low cost, PC-based terminals are possible for all data rates and modulation types – Performance data, Hardware design and software design is available on – Development performed for GOES-R Program by Aerospace Corp. – Presentation and Demonstrations provided last night HRIT/EMWIN (Continued) 18

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GOES-DCS consists of two communication Services: – Data Collection Platform Receive (DCPR) – Data Collection Command (DCPC) … Previously “ Interrogate ” (DCPI) GOES-R will support the ongoing evolution toward greater channel efficiency and system capacity – Narrower DCPR channel assignments allowing both East and West satellites to each support 200 simultaneous platform signals, with a total system capacity of about 72,000 platforms – A new DCPC service, based on CDMA techniques, currently in prototype development. This user-funded development concept will allow one command channel on each GOES NOP Series satellite and two channels on each GOES-R Series satellite Direct Broadcast of DCPR to User systems having 15.0 G/T will continue to be supported, but …. GOES Data Collection System 21

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Summary of Changes to GOES-DCS for GOES-R Series: – DCP uplink transmit power reduced, in accordance with latest DCP Certification Specifications – DCPR uplink frequencies will be unchanged – DCPR Downlink frequencies will be shifted from MHz to MHz Will require change in channel demodulator frequency – DCPI becomes DCPC: Will be compatible with on-going User-funded developments compatible with current satellites Able to support a second DCPC channel GOES Data Collection System (Continued) 22

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23 SARSAT

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Signal characteristics of the SARSAT service will be slightly modified for GOES-R: – Up and down-link center frequencies remain the same – GOES-R will transpond, rather than re-modulate, the up-link band – Will require configuration changes to the LUT receiver To account for degraded Beacons, GOES-R will operate with 32 dBm uplink power (versus 36 dBm for GOES-NOP) – Provides improved capability to support beacons with weak signals – Transponder will also operate with a minimum of 10 uplink beacons simultaneously – Conforms to COSPAS/SARSAT Specification T001, Issue 3 Revision 8 dated Nov 2007 SARSAT 24

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System requirements, communications requirements, and the Ground Segment architecture have been defined for the entire system, including Direct Readout Services Detailed definition of communication link characteristics have not yet been fully finalized and will be refined through the Spacecraft and Ground Segment contract design processes … However the GOES-R baseline is: – GRB will replace all current forms of instrument data broadcast: Full resolution Geo-located Calibrated In essentially real-time – EMWIN and LRIT will be combined and enhanced to a higher data rate on a new downlink frequency – HRIT/EMWIN – DCS will remain largely the same, however DCPR downlink in L-Band will have a frequency shift – SARSAT will be essentially unchanged Summary 26

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Documentation for the Direct Readout User community will be produced by the GOES-R Ground System contractor as CDRLs. – Of particular note, the GS Contractor (Harris Corporation) will be developing a Product User's Guide (PUG) that will include a section on building a GRB receive system Summary (Continued) 27